So what types of parts are best suited for centerless grinding?
μΌν°λ¦¬μ€ μ°μμ μΌν° μμ΄ μν΅ν λΆνμ κ°κ³΅νλ 곡μ μΌλ‘, μ€ννΈ, λ‘€λ¬, λ² μ΄λ§ λΆν, μλμ°¨ λΆνκ³Ό κ°μ΄ μΌμ ν μΈκ²½ μ λ°λμ νλ©΄ νμ§μ΄ μꡬλλ λΆνμ λλ μμ°μ μ ν©ν κ°κ³΅ λ°©μμ λλ€. νΉν μμ°λ, λ°λ³΅ μ λ°λ, 곡μ μμ μ±μ΄ μ€μν νκ²½μμ ν¨κ³Όμ μΌλ‘ μ μ©λ©λλ€.
κ·Έλ λ€λ©΄ μΌν°λ¦¬μ€ μ°μμΌλ‘ μ΄λ€ λΆνμ κ°κ³΅ν μ μμκΉμ?
Definition of Centerless Grinding
μΌν°λ¦¬μ€ μ°μμ μ μ
Centerless grinding is a precision machining process used to grind the outer diameter of cylindrical parts without the need for centers or chucks. The workpiece is supported between a grinding wheel and a regulating wheel, allowing continuous processing with high productivity and consistent dimensional accuracy.
This process is particularly effective for mass production of shafts, rollers, bearing components, and automotive parts that require stable diameter control and uniform surface finish. Because it enables high throughput with excellent repeatability, centerless grinding is widely used in industries where both precision and production efficiency are critical.
μΌν°λ¦¬μ€ μ°μμ μΌν°λ μ² μμ΄ μν΅ν λΆνμ μΈκ²½μ κ°κ³΅νλ μ λ° μ°μ 곡μ μ
λλ€. μν¬νΌμ€λ μ°μ ν κ³Ό μ‘°μ ν μ¬μ΄μμ μ§μ§λλ©°, μ°μ κ°κ³΅μ΄ κ°λ₯νμ¬ λμ μμ°μ±κ³Ό μμ μ μΈ μΉμ μ λ°λλ₯Ό ν보ν μ μμ΅λλ€.
μ΄ κ³΅μ μ μ€ννΈ, λ‘€λ¬, λ² μ΄λ§ λΆν, μλμ°¨ λΆνκ³Ό κ°μ΄ μΌμ ν μΈκ²½ μ λ°λμ κ· μΌν νλ©΄ νμ§μ΄ μꡬλλ λΆνμ λλ μμ°μ μ ν©ν©λλ€. λμ λ°λ³΅ μ λ°λμ μμ°μ±μ λμμ ꡬνν μ μκΈ° λλ¬Έμ, μ λ°λμ ν¨μ¨μ΄ μ€μν μ°μ μμ λ리 νμ©λ©λλ€.
ORSKOREA Centerless Grinding Machines, SGC Series
μ€μμμ€μ½λ¦¬μμ μΌν°λ¦¬μ€ μ°μκΈ°, SGC μ리μ¦
ORSKOREAβs SGC Series centerless grinding machines are designed to process a wide range of parts, from small precision components to large and heavy workpieces. The series delivers stable grinding performance, high accuracy, and consistent productivity across various industries.
The naming structure combines the prefix βSGC (Strong& Smart Grinding Centerless)β with a number that represents the regulating wheel width (mm), allowing users to quickly identify the machine capacity based on part size.
The SGC Series includes models optimized for different applications:
- SGC 200 / 300: ideal for small to medium-sized parts
- SGC 500 / 500K / 500C: suitable for large and heavy components
NC and CNC configurations are available, allowing flexible selection based on production environments and machining requirements.
μ€μμμ€μ½λ¦¬μμ SGC μλ¦¬μ¦ μΌν°λ¦¬μ€ μ°μκΈ°λ μν μ λ° λΆνλΆν° λν λ° μ€λ λΆνκΉμ§ νλμ κ°κ³΅ λ²μλ₯Ό μ§μνλλ‘ μ€κ³λμμ΅λλ€. λ€μν μ°μ νκ²½μμ μμ μ μΈ μ°μ μ±λ₯κ³Ό λμ μ λ°λ, μΌκ΄λ μμ°μ±μ μ 곡ν©λλ€.
λͺ¨λΈλͺ μ βSGC(Strong& Smart Grinding Centerless) βμ μ«μλ‘ κ΅¬μ±λλ©°, μ«μλ μ‘°μ ν ν(mm)μ μλ―Ένμ¬ κ°κ³΅ κ°λ₯ν λΆν ν¬κΈ°λ₯Ό μ§κ΄μ μΌλ‘ ꡬλΆν μ μμ΅λλ€.
SGC μ리μ¦λ κ°κ³΅ λμμ λ°λΌ λ€μκ³Ό κ°μ΄ ꡬμ±λ©λλ€.
- SGC 200 / 300: μν λ° μ€μν λΆν κ°κ³΅
- SGC 500 / 500K / 500C: λν λ° μ€λ λΆν κ°κ³΅
λν NC λ° CNC μ¬μμ λͺ¨λ μ§μνμ¬, κ³ κ°μ¬μ μμ° νκ²½κ³Ό κ°κ³΅ μꡬμ λ§μΆ° μ΅μ μ ꡬμ±μ μ μ°νκ² μ νν μ μμ΅λλ€.
Centerless Grinding for Your Components
Looking for the right centerless grinding solution for your parts and specifications?
κ·μ¬μ λΆν λ° κ°κ³΅ 쑰건μ λ§λ μΌν°λ¦¬μ€ μ°μ μ루μ
μ μ°Ύκ³ κ³μ κ°μ?
Common Centerless Grinding Workpieces
μΌν°λ¦¬μ€ μ°μ κ°κ³΅μ΄ κ°λ₯ν μ£Όμ μν¬νΌμ€
The following sections focus on key cylindrical parts where centerless grinding is most effectively applied.
μλμμλ μΌν°λ¦¬μ€ μ°μμ΄ ν¨κ³Όμ μΌλ‘ μ μ©λλ μ£Όμ μν΅ν λΆνλ€μ μ€μ¬μΌλ‘ μ΄ν΄λ΄
λλ€.
Shaft Grinding for Automotive and EV Powertrain Components
μλμ°¨ λ° μ κΈ°μ°¨ νμνΈλ μΈ μ€ννΈ κ°κ³΅

Centerless grinding is widely used for shaft-type components in automotive and EV powertrain applications. These parts require tight diameter tolerances, high roundness, and consistent surface finish in high-volume production environments.
Because it enables continuous processing, centerless grinding is ideal for achieving both precision and productivity simultaneously.
μΌν°λ¦¬μ€ μ°μμ μλμ°¨ λ° μ κΈ°μ°¨ νμνΈλ μΈ λΆμΌμ μ€ννΈν λΆν κ°κ³΅μ λ리 μ¬μ©λ©λλ€. μ΄λ¬ν λΆνμ λλ μμ° νκ²½μμ μ격ν μΈκ²½ 곡차, λμ μ§μλ, κ· μΌν νλ©΄ νμ§μ΄ μꡬλ©λλ€. μΌν°λ¦¬μ€ μ°μμ μ°μ κ°κ³΅μ΄ κ°λ₯ν΄ μ λ°λμ μμ°μ±μ λμμ ν보ν΄μΌ νλ νκ²½μ μ ν©ν 곡μ μ λλ€.
Key Workpieces | μ£Όμ κ°κ³΅ λΆν
Shaft | μ€ννΈ
Gear shaft | κΈ°μ΄ μ€ννΈ
Cross shaft | ν¬λ‘μ€ μ€ννΈ
Electric motor shaft | μ κΈ° λͺ¨ν° μ€ννΈ
EV motor shaft | EV λͺ¨ν° μ€ννΈ
EV reduction shaft | EV κ°μκΈ° μΆ
Pinion shaft | νΌλμΈ μ€ννΈ
Armature shaft | μ κΈ°μ μΆ
Turbocharger shaft | ν°λ³΄μ°¨μ μΆ
Shock absorber shaft | μΌλ° μΆ
Precision Grinding of Aerospace and Defense Components
ν곡 λ° λ°©μ° μ λ° λΆν μ°μ

In aerospace and defense industries, centerless grinding is applied to precision shaft-type components such as rotor shafts, actuator shafts, and high-precision pins. These components often use difficult-to-machine materials and require exceptional dimensional stability and surface integrity.
Centerless grinding ensures consistent accuracy and repeatability, even under strict quality and certification requirements.
ν곡 λ° λ°©μ° λΆμΌμμλ λ‘ν° μ€ννΈ, μ‘μΆμμ΄ν° μ€ννΈ, μ λ° νκ³Ό κ°μ μ€ννΈν λΆν κ°κ³΅μ μΌν°λ¦¬μ€ μ°μμ΄ μ μ©λ©λλ€. μ΄λ¬ν λΆνμ λμμ¬λ₯Ό μ¬μ©νλ κ²½μ°κ° λ§μΌλ©°, λμ μΉμ μμ μ±κ³Ό νλ©΄ νμ§μ΄ μꡬλ©λλ€.
μΌν°λ¦¬μ€ μ°μμ μ격ν νμ§ κΈ°μ€μμλ μΌκ΄λ μ λ°λμ λ°λ³΅μ±μ ν보ν μ μλ 곡μ μ
λλ€.
Key Workpieces | μ£Όμ κ°κ³΅ λΆν
Rotor shafts | λ‘ν° μ€ννΈ
Actuator shafts | μ‘μΆμμ΄ν° μ€ννΈ
Control shafts | μ μ΄ μ€ννΈ
Precision pins | μ λ° ν
Landing gear pins | λλ©κΈ°μ΄ ν
Hydraulic system shafts | μ μ μμ€ν
μ€ννΈ
Medical and Implant Component Grinding
μλ£κΈ°κΈ° λ° μνλνΈ λΆν κ°κ³΅
Centerless grinding is widely used for medical pins, implant components, and micro shafts that require ultra-precision and fine surface quality. Typical parts include surgical pins, implant rods, and small-diameter precision shafts.
The process enables stable micro-level accuracy and repeatability, making it suitable for precision medical applications and small-batch production.
μΌν°λ¦¬μ€ μ°μμ μλ£μ© ν, μνλνΈ λΆν, λ§μ΄ν¬λ‘ μ€ννΈμ κ°μ΄ μ΄μ λ° κ°κ³΅μ΄ μꡬλλ λΆνμλ μ¬μ©λ©λλ€. λνμ μΌλ‘ μμ μ© ν, μνλνΈ λ‘λ, μν μ λ° μ€ννΈ λ±μ΄ ν¬ν¨λ©λλ€. λ―ΈμΈ μ λ°λμ λ°λ³΅ μ λ°λλ₯Ό μμ μ μΌλ‘ ν보ν μ μμ΄, μλ£κΈ°κΈ°μ κ°μ κ³ μ λ° λΆμΌμ μ ν©ν©λλ€.
Key Workpieces | μ£Όμ κ°κ³΅ λΆν
Medical pins | μλ£μ© ν
Implant rods | μνλνΈ λ‘λ
Micro shafts | λ§μ΄ν¬λ‘ μ€ννΈ
Ceramic spacers | μΈλΌλ―Ή μ€νμ΄μ
Roller and Bearing Component Grinding
λ‘€λ¬ λ° λ² μ΄λ§ λΆν κ°κ³΅
Bearing Precision by Size
Smaller size β Higher precision requirement
Source: ORSKOREA (Compiled based on industry trends)
Centerless grinding is a key process for cylindrical bearing components such as bearing rollers, needle rollers, and cylindrical rollers. These parts directly affect rotational stability and service life, requiring consistent geometry and surface integrity.
As bearing components become smaller, process stability becomes increasingly important, making centerless grinding essential for maintaining reliable performance in high-precision applications.
μΌν°λ¦¬μ€ μ°μμ λ² μ΄λ§ λ‘€λ¬, λλ€ λ‘€λ¬, μν΅ λ‘€λ¬μ κ°μ μν΅ν λ² μ΄λ§ λΆν κ°κ³΅μ ν΅μ¬μ μΈ κ³΅μ μ
λλ€. μ΄λ¬ν λΆνμ νμ μμ μ±κ³Ό μλͺ
μ μ§μ μ μΈ μν₯μ λ―ΈμΉκΈ° λλ¬Έμ, κ°κ³΅ κ³Όμ μμμ νμ μΌκ΄μ±κ³Ό νλ©΄ νμ§ νλ³΄κ° μ€μν©λλ€.
νΉν λΆνμ΄ μννλ μλ‘ κ³΅μ μμ μ±μ΄ λμ± μ€μν΄μ§λ©°, μΌν°λ¦¬μ€ μ°μμ κ³ μ λ° λ² μ΄λ§ μμ°μμ μμ μ μΈ νμ§μ μ μ§νλ λ° νμμ μΈ μν μ ν©λλ€.
Key Workpieces | μ£Όμ κ°κ³΅ λΆν
Bearing rollers | λ² μ΄λ§ λ‘€λ¬
Cylindrical rollers | μν΅ λ‘€λ¬
Needle rollers | λλ€ λ‘€λ¬
Rollers | λ‘€λ¬
Roller pins | λ‘€λ¬ ν
Roller pins | μ¬λ¦¬λΈλ§
Outer rings (OD grinding) | λ§ (μΈκ²½ κ°κ³΅ κΈ°μ€)
Hydraulic, Pneumatic and Fuel System Parts Grinding
μ μ·곡μ λ° μ°λ£ μμ€ν λΆν κ°κ³΅
Centerless grinding is applied to cylindrical components such as piston rods, valve parts, fuel system components, and high-pressure pins used in demanding environments. These parts must maintain durability and stable performance even when machining hardened and high-strength materials.
As performance requirements increase, process stability becomes more critical. ORSKOREAβs centerless grinding machines deliver reliable results through high rigidity and thermal stability, reducing variation while improving durability and operational efficiency.
μΌν°λ¦¬μ€ μ°μμ νΌμ€ν€ λ‘λ, λ°ΈλΈ λΆν, μ°λ£ μμ€ν
λΆν, κ³ μμ© νκ³Ό κ°μ΄ κ³ λΆν νκ²½μμ μ¬μ©λλ μν΅ν λΆν κ°κ³΅μ μ μ©λ©λλ€. μ΄λ¬ν λΆνμ κ³ κ²½λ λ° κ³ κ°λ μμ¬μμλ μμ μ μΈ μ±λ₯κ³Ό λ΄κ΅¬μ±μ μ μ§ν μ μμ΄μΌ ν©λλ€.
μ±λ₯ μꡬ μμ€μ΄ λμμ§μλ‘ κ³΅μ μμ μ±μ΄ μ€μν΄μ§λ©°, μ€μμμ€μ½λ¦¬μμ 무μ¬μ°μκΈ°λ λμ κ°μ±κ³Ό μ΄ μμ μ±μ κΈ°λ°μΌλ‘ 곡μ λ³λμ μ΅μννκ³ , λ΄κ΅¬μ±κ³Ό μ΄μ ν¨μ¨μ λμμ ν₯μμν΅λλ€.
Key Workpieces | μ£Όμ κ°κ³΅ λΆν
Piston pins | νΌμ€ν€ ν
Diesel nozzles | λμ € λ
Έμ¦
Engine valve stems | μμ§ λ²¨λΈ
Valve plates | λ°ΈλΈ νλ μ΄νΈ
Bushings / Bushes | λΆμ¬ /λΆμ±
Cam rings | μΊ λ§
Why Centerless Grinding Is Critical for High-Volume Precision Manufacturing
κ³ μ λ° λλ μμ°μμ μΌν°λ¦¬μ€ μ°μμ΄ μ€μν μ΄μ

As component designs become more advanced and performance requirements continue to increase, ensuring both process stability and precision has become increasingly important. Centerless grinding, in particular, is a critical process where productivity and quality must be achieved simultaneously, making machine selection a key factor depending on the application.
ORSKOREAβs centerless grinding machines are designed to handle a wide range of machining conditions, from small precision parts to large and heavy components. With a strong focus on process stability and repeatability, they deliver consistent performance even in long production runs.
When selecting a centerless grinding machine, factors such as workpiece type, production conditions, and required accuracy should be carefully considered. Machine stability and process flexibility are essential criteria for optimal performance.
If you are looking to optimize your centerless grinding process, ORSKOREA provides reliable solutions to help you achieve stable and efficient machining operations.
λΆν μ€κ³κ° κ³ λνλκ³ μ±λ₯ μꡬ μμ€μ΄ λμμ§μ λ°λΌ, κ°κ³΅ 곡μ μ μμ μ±κ³Ό μ λ°λλ₯Ό λμμ ν보νλ κ²μ΄ λμ± μ€μν΄μ§κ³ μμ΅λλ€. νΉν μΌν°λ¦¬μ€ μ°μμ μμ°μ±κ³Ό νμ§μ ν¨κ» κ³ λ €ν΄μΌ νλ ν΅μ¬ 곡μ μΌλ‘, μ μ© νκ²½μ λ§λ μ₯λΉ μ νμ΄ μ€μν μμλ‘ μμ©ν©λλ€.
μ€μμμ€μ½λ¦¬μμ μΌν°λ¦¬μ€ μ°μκΈ°λ μν μ λ° λΆνλΆν° λν λ° μ€λ λΆνκΉμ§ λ€μν κ°κ³΅ 쑰건μ λμν μ μλλ‘ μ€κ³λμμΌλ©°, 곡μ μμ μ±κ³Ό λ°λ³΅ μ λ°λ ν보μ μ€μ μ λκ³ μμ΅λλ€. λν μ€μ μμ° νκ²½μ κ³ λ €ν ꡬ쑰λ₯Ό κΈ°λ°μΌλ‘, μ₯μκ° κ°κ³΅μμλ μΌκ΄λ νμ§μ μ μ§ν μ μλλ‘ μ§μν©λλ€.
μΌν°λ¦¬μ€ μ°μκΈ° μ ν μμλ κ°κ³΅ λμ, μμ° μ‘°κ±΄, μꡬ μ λ°λλ₯Ό μ’
ν©μ μΌλ‘ κ³ λ €ν΄μΌ νλ©°, μ₯λΉμ μμ μ±κ³Ό 곡μ λμ λ²μκ° μ€μν νλ¨ κΈ°μ€μ΄ λ©λλ€.
μΌν°λ¦¬μ€ μ°μ 곡μ μ μ΅μ νλ₯Ό κ³ λ―Όνκ³ κ³μ λ€λ©΄, μ€μμμ€μ½λ¦¬μμ μ루μ
μ ν΅ν΄ λ³΄λ€ μμ μ μ΄κ³ ν¨μ¨μ μΈ κ°κ³΅ νκ²½μ ꡬμΆν΄λ³΄μκΈ° λ°λλλ€.
